Intercone mill



April 16, 1935. p H. H. RUMPEL Re. 19,538

INTERC ONE MILL Original Filed Sept. 17, 1928 2 Sheets-Sheet 1 NVENTOf;

ATTORNEY? WM wM H. H RUMPEL INTERbONE MILL April 16, 1935.

Original Filed $ep t. 1'7, 1928 2 Sheets-Sheet 2 TORNEYS 1 VENTOR Reissued Apr. 16, 1935 UNITED STATES INTEBLONE DIILL Harvey H.

to Smith Enlincerlng p!!- Mllwaukee, Wis., assignor Works, Milwaukee, Wis.,

a corporation of Wisconsin Original No. 1,945,791, dated February 6, 1934, Serial No. 306,381, September 17. 1928. Application for reissue December 29, 1934, Serial No.

8 Claims.

\ This invention relates to improvements in intercone mills of the eccentric rolling motion pe.

It is one of the objects of thepresent invention to provide an intercone mill in which the crusher head has a rolling, eccentric or gyratory motion while it is bodily rotated by the shaft into which it has its bearing, and cooperates with the relatively fixed crushing member or concave.

A further object of the invention is to provide an intercone mill having a relatively fixed crushing member which is arranged to yield under undue pressure.

A further object of the invention is'to provide an intercone mill having a sleeve shaft formed with an eccentric and obliquely extending conical bore for receiving the conical shaft of the movable crushing cone or head, and in which the crushing strain from the head is transmitted to the frame through the sleeve shaft.

A further object of the invention is to provide an intercone'mill in which the central portion of the crushing head is provided with an extenskin which projects above the upper crushing edge of the relatively fixed crushing memher of concave and aids in the feeding operationby agitating the material in the portion bf the mill above the concave.

A further object of the invention is to provide an intercone mill in which the crushing head or cone is supported upon a conical roller bearing which takes the crushing strain between the head and the shaft, and another conical roller bearing to take the end thrust strain of the main head supporting shaft.

35 A further object of the invention is to provide an intercone mill in which the crushing cone is provided with a dust ring of part spherical shape which is yieldingly connected to the lower por-' tion of the cone within the confines of a cone 4 apron and bears upon a part spherical and enclosing frame part to prevent entry of dust to the bearings.

A further object of the invention is to provide an intercone mill in which the cone mantle is secured to the cone head by a lining of zinc, said zinc lining also being utilized to form a key to prevent independent rotation of the mantle on the head.

A further object of the invention is to provide an intercone mill in which the cone mantle is formed of two parts interlocked together to prevent independent rotation and to permit replacement of either part when worn.

A further object of the invention is to provide an intercone mill having the upper portion of vide an intercone mill having a shield for the shaft nut which is of cup shape form to receive stone or dust to eliminate wear from the nut. v

A further object of the invention is to provide an intercone mill whichis of simple construction, is strong and durable and is well adapted for the purpose-described.

With the above and other objects in view, the invention consists of the improved intercone mill and its parts and combinations. as set forth in the claims and all equivalents thereof.

In the accompanying drawings in. which the same reference characters indicate the same parts in all of the views: 1

Fig. 1 is a vertical sectional viewthrough the improved mill; v

Fig. 2 is a-top view thereof with away to show interior construction Fig. 3 is a horizontal sectional view thereof taken. on line 3-3 of Fig. 1 and on a larger scale; and

Fig. 4 is a top view of the concave grinding member removed from the -mill.

Referring to the drawings, the numeral 5 indicates a lower frame or casing which is of cylindrical form and is provided with an upper and outwardly extending flange 6. The casing is also provided with an inner bearing or hub portion 1 connected to the outer portion by radial ribs 8. A vertical tubular sleeve 9 having an enlargement 9' at its upper end is journaled in the inner bearing and is formed with a tapered obliquely extending eccentric bore I 0, the upper end portion 9" of the sleeve being formed in a plane extending at right angles to the eccentric bore. A tapered crusher shaft II is journaled in the bore l0 and is formed with upper shouldered portions l2 upon which is rigidly secured a tapered crusher head I 3 having a two part frustro-conical mantle l4 mountparfs broken ed thereon. The mantle I 4 is divided horizontally to form the two parts and the upper portion I4 is locked against independent rotation by a tongue and recess connection 15; The upper mantle portion I4 is formed with an upward extension l6 which is engaged by anut I1 threaded on the upper end of the shaftjlfljl to clamp the mantle on the crusher head A cap :8 extends around the nut to protect the same and is held in position by a screw l9 threaded into the upper end of the shaft. A disk 25 reform while the outer face of-the crusher head is formed with one or more keyways 22, and zinc 23 in a molten form is poured between the mantle and the head and portions of the shaft 40 to firmly bind the parts together. A counter-weight 24 is mounted on one side of the sleeve at its upper end to counterbalance the weight of the eccentric location of the crusher head with relation to the sleeve. The crusher head is supported upon a conical roller bearing 25 which is interposed between the head and the sleeve shaft 9, and likewise the lower end of the sleeve shaft 9 is supported on a similar bearing. 35 between the sleeve shaft and the frame, so thatthe down- I ward crushing strain is borne by the eccentric sleeve and from the sleeve to the frame, and thus materially differsfrom crushers in which the strain is borne by the shaft of the head.'

An oil or dust ring' 21 is loosely fitted in the lower part of the head and is kept from turning independently of the head by pins 25. In addition to its weight, it is pressed against a removable ring 29 by springs 35. The ring 29 is carried by the bearing 1 and the adjacent bearing faces of each ring are of spherical form to permit eccentric turning movement of the head. A packing 3| is provided to prevent entrance of dust into the bearing and oil from getting out of the bearing. The outer depending flange 33 of the head, which also serves 'to prevent dust from entering the bearing, is provided with an extension or apron in the form of a'rubber belt 33 which extends around the flange I of the inner bearing I for the same purpose.

A bevel gear 34 mounted on the lower end portion of the sleeve 9 is in mesh with and driven by a bevel pinion 35 which is mounted on the inner end of a horizontal driving shaft 35. Said driving shaft is joumaled in roller bearings 35' and extends through the frame or casing and at its outer end is provided with a pulley 31 for connection with a source of power, not shown. The horizontal shaft also has a geared connection 33 with an oil pump 39 for forcing oil to various portions of the mill. The pump 39 is connected to an oil tank 40 and draws the oil therefrom andforces it into the eccentric bore of the vertical sleeve by means of the pipe 4|. The sleeve is formed with a duct 52 and a side aperture 43 to permit the passage of the oil to the upper roller bearing 25 and the engaging rings. The crusher shaft, the lower bearing, the gears and the bearings of the drive shaft are also lubricated from the same source. The sleeve 9 is also provided with an outer duct 45 for lubricating the bearing of the sleeve. A pipe 35 extending from the flange I to the lower portion of the inner bearing permits the return of the oil to the gear chamber 45, duct 41 and return pipe 43 to the oil tank 50, thus providing for a constant circulation of oil through the mill. The pipes II and 53 are connected to and the duct 41 is formed in a gagement. in the spaces between the end portions of the cap member 5' bolted to and forming part of the main frame 5.

A duct 49 permits the oil to flow from the gear chamber 55 to the shaft and gear chamber 55 to lubricate the bearings of said shaft, and a. return pipe 5| which may connect to the oil tank, returns the oil to the tank.

An upper housing or frame 52 is formed with an annular rounded flange 53 which extends over and engages the upper rounded flange 5 of the main frame; Bolts 54 extending downwardly through both flanges 5 and 53, and also through a floating ring 54 which surrounds the main frame 5, are provided with nuts 55 at their lower ends. Coiled springs 55 surrounding the bolts and interposed between the flange 5 and the floating ring yieldingly hold the upper housing in position. Springs 55' extending around pins 55' depending from the flange 53 are also interposed between the flange 5 and the floating ring 54-.to assist the springs 55 in yieldingly holding the upper frame or housing member in position. The upper portion of the housing is split radially or transversely, as indicated'by the numeral 51, to permit a slight give of said parts, and transverse bolts 53 which extend through the split portions draw the two parts into clamping engagement with the upper or concave frame member 59 around which it extends. The portion of the concave member surrounded by the housing is of cylindrical form, and is provided with an inwardly extended annular flange 55 for receiving segmental shims 5| which are placed at spaced intervals around the flange and between the flange and the housing to adjust the height of the concave with relation to the'mantle ll. Bolts 52 adjustably support the weight of the concave member 59, and pins 54 serve as guides to hold the parts in en- Said bolts and pins are positioned shims.

An outer or concave crushing member 55 surrounds the grinding head in spaced relation and is secured to the inner concave portion 59' of the concave frame member 59 by bolts and nuts 55 which pass through radial lugs 51 formed on the outerside of the concave crushing member 55, to permit replacement of said crushing member when worn. The lugs 51 extend into recesses 53 formed in the concave member portion 59'. The contacting face portions of the parts 59' and 55 are ground or machined to space the lugs 51 from the walls of the recesses, and said spaces are fllled with pieces of wood 53' or other easily compressible material as wood, to permit drawing the bolts tight in the event that the zinc packing material should give way.

The lower portion of the concave member 59' is provided with an apron 59 having a yielding ring packing Ill mounted on its outer side which bears against the inner wall of the casing 5 to slidingly seal the connection therebetween. The upper inner portion of the concave flange member 55 is provided with an upstanding collar ll against which the inner upper edges of the concave housing bears.

A cylindrical support and feed spout I2 is crushed material may gather are fllled with zinc,

rubber or other packing material 13 to protect said parts. e

. intersection, it will have a circular oscillatory movement above the crusher members and within the feed spout, and tend to agitate the material within the spout and cause a positive feed of material between the crusher members, thus providing a more eflicient crusher.

In operation, the material to be crushed is fed to the machine through the feed spout, and is crushed between the head and the concave. Due to the fact that the tubular sleeve shaft within the frame revolves andthe crusher head shaft is eccentrically and obliquely iournaled in the sleeve, an eccentric or gyratory action is imparted to the crusher head by the shaft upon which the head is mounted. vDue to the obliquely extending eccentric portion of the crusher shaft, which carries the crusher head, the rotation of the sleeve shaft will cause'the crusher head to turn ina path eccentric to the concave, so that portions of the head in moving closer to the concave will crush the material therebetween, and the head may in some portions of its movement be rotated by engaging the material. If the crushing space between the two crushing members is overloaded with material, or lumps of mapressure of the concave member springs and permit the concave member to tilt upwardly and enlarge the space, and the material will then be worked from between the crushing members, and said concave member will then assume its regular crushing position as shown.

As the upper end portion 8" of the sleeve extends at an angle to the lower end of the sleeve, the said upper angular portion is somewhat like a cam which carries one side face portion of the crusher head at a higher plane than the opposite side face portion, with the result that in being carried around by the sleeve, this higher plane portion wedgingly engaged the material and more efllciently crushed the same. Flu'thermore, the lubrication of the parts subjected to the reatest strain eliminates considerable friction and conduces to greater efliciency.

From the foregoing description, it will be seen that the intercone mill is of simple construction, and is well adapted for the purpose described.

What I claim as my invention is:

1. In a crusher a frame, an 'outer crushing member supported by said frame, an inner crushing member cooperating with said outer mem- -ber to form a crushing chamber, a rotary ec-- centric journaled in said frame concentrically of the central crusher axis and having a bore drivoperating with saidconcave to form a crushingchamber, a rotary eccentric iournaled in said frame concentrically of the central crusher axis and for relatively gyrating said head and concave, said eccentric having a bore the axis of which is inclined relative to and intersects the central axis of rotation of said eccentric above the latter, means rigidly associated with said head for imparting driving motion from said eccentric to said head and for rotatably confining the same concentrically of said bore, a thrust bearing supporting said head upon said eccentric, and another thrust bearing supporting said eccentric from said frame, said first mentioned bearing lying in a plane perpendicular to said inclined bore axis and the other being perpendicular to the central eccentric axis.

3. Ina crusher, a frame, an outer crushing member supported by said frame, an inner crushing member cooperating with said outer member to form a crushing chamber, a rotary eccentric .iournaled in said frame concentrically of the central crusher axis and beneath said inner member for gyrating the latter relative to said outer member, said eccentric having a bore the axis of which is inclined with respect to the central axis o1 rotation of said eccentric, a shaft secured to said inner member and joumaled in said eccentric bore, a thrust bearing supporting said inner member upon the upper end of said eccentric, and another thrust bearing supporting the lower end of said eccentric from said frame, said bearings being disposed respectively in planes perpendicular to said inclined bore axis and to said central'eocentric axis. I

4. In a crusher, a frame, a crushing concave supported-by said frame, a crushing head cooperating with said concave to form a crushing chamber, a rotary eccentric journaled in said frame concentrically of the central crusher axis and beneath said head for gyrating the latter relative to said concave, said eccentric having an outer annular bearing surface and an inner bore generated about axes which intersect above said 5. In a crusher, .a frame, a crushing concavesupported by said frame, a crushing head cooperating with said concave to form a crushing chamber, a rotary eccentric journaled in said frame concentrically oi the central crusher axis and beneath the discharge end of said chamber, said eccentric cooperating with said head to gyrate the same relative to said concave and having an outer cylindrical bearing surface and an inner bore generated about axes which intersect above said eccentric, a shaft rigidly attached to and depending from said head and journaled in said bore for rotatably and drivingly confining said head concentrically of said bore, a thrust bearing surrounding said shaft and disposed between a lower portion of said head and an upper portion of said eccentric, and another thrust bearing between the lower portion of said eccentric and said frame.

6. In a crusher, a frame, an outer crushing member supported by said frame, an inner crushing member cooperating with said outer member to form a crushing chamber, a rotary eccentric Journaled' concentrically of the central crusher axis and having a bearing surface drivingly cooperable with said inner member to relatively gyra'te said members, said bearing surface'having an axis which is inclined relative to the central crusher axis, a thrust bearing supporting said inner member upon said eccentric, and another thrust bearing supporting said eccentric from said frame, said bearings lying in relatively inclined planes. 1

7. In a crusher, a frame, an outer crushing member supported by said frame, an inner crushing member cooperating with said outer member to form ,a crushing chamber, a rotary eccentric journaled concentrically 0f the central crusher axis and having a bearing surface drivingly c0- operable with said inner member to relatively gyrate said members, said bearing surface having an axis which is inclined relative to the central crusher axis, a thrust bearing disposed concentric with said inclined axis for supporting said inner member upon said eccentric, and another thrust bearing disposed concentric with the central crusher axis for supporting said eccentric from said frame.

8. In a crusher, a frame, a concave supported by said frame, a head cooperating with said concave to form a crushing chamber, a rotary eccentric joumaled concentrically of the central crusher axis and having inner and outer'eccentrically disposed bearing surfaces, one of said surfacesrbeing drivingly cooperable with said head to gyrate the same relative to said concave and said surface having an axis which is in-" clined relative to the central crusher axis, an annular thrust bearing formed concentric with said inclined axis for supporting said head upon said eccentric, and another annular thrust, bearing formed concentric with the central crusher axis for supporting said eccentric from said frame.

HARVEY H. animal... 

